Friction clutch



sept. 2z, 1925.

A. A. CONWAY FRICTION- CLUTCH Filed April 8, 1924 fig.

ALFRED A Gouw/w Be it known that"`I,"`ALrRnD ALFRED"n.ffoonWAYQfor'cmoINNAmLoHIo. d y

PATENT'OFF T allfwomfit mdf/concern acitizen of the United States of America,

` and a resi'dentof Cincinnati',` inthefco-unty of Hamilton and StateofOhio", have `in"` vented a new .and `useful Improvement in a Friction Clutch5 `of which the following is speizilication` An object of my invention is to providea clutch havingja simple and eflicientfineans for adjustingtheshoethereof,

Another 'objectof` my"inventionistdfproek vide a "clutch wherein a full `c"`onta `t between 'i the shoeand the shoe housing is)"attained.4

' `These y and other objects fare' attained t by the means described herein fand' disclosed' in.;V

the"A accompanying drawings, in which,

Figa 1 .is a sidefelevationof clutchenihodying my inventionylone clutch" member r`friction', orclutch shoe 12 fixedly mountedlon thejshaft 13. They friction orV clutch` shoe `maybe mounted" on the shaft" byj'any suitable means, such `as thelset "screw-1.4L extending through thelhub 15 of the'jshoe,

and engaging kthe `shaft 13. 'I hehublispro`-`Y tialproportion that "carries the `ends 17jandnv` 18 `of the expansible band of the shoe. The ends 17 and` 18 may move to an eccentric and a concentric relationshipfto the internal and 18 are supported fromthe hub 15, by

A arms 2O and 21, at the time that the shoe is cast, and subsequent thereto`,the arms are drilled for providingbores 22 therein,`

and the arms are `then broken, the lines of fracture being indicated at 23 and 24. i This structure permits springing `or relative flex-` ing of the forwarder free ends of the shoe relative to Athe retaining arm 16. The end 17 of the shoe is provided `with a recess or bore 25 adapted to receive one end of a screw 26. The screw carries a `bevel gear, 27 that engages a bevel gear 28 mounted on a stud shaft 29 extending through -a bore provided in the extension 30 on the end 17 of the` friction or clutch shoe. The end .31

of the stud shaft 29 is of an angular cross CONWAY,` j

ingicomplementaryto the` end 31 o-f the shaft `'wsectior'n for exampleas shown hereingsqufare; y

and receiveslawasher 32havinganangular` aperturetherethrough, the` said"daperture"be-f,k Y V"] `29. Ascrew isjcarried bythe extension@` 3Q andmay engage the washer 82 for locking y Y( the washer f against movement.` llirom the foregoing', it willbe evidentthat by relea`s-"V ing thewashe'r `32 from the binding'infiuence'ofthes'crew and by applying asmall bore" 37 provided at the end 18j ofthe fricadapted be engaged by a cone'- 39 `movable longitudinally of the shaft 18.` Thefmovetion o r clutch shoe;` A secondend 38 ofthef f y lever `is disposed'adjacent the hub 1`5,` and'is` ment of the` cone 89` and the engagement-V of saidcone upon thezlever 35: is utilizedf for-osc1llating the lever `36 .in the bore-37 whereby tofjreciprocate the `screw 26 with the consequent` expanding and contracting' offthevfriction orclutch shoe for1`eifecting 3 y `clamping and releasing fof `the friction or clutchfshoe` lupon the casing or housing 10.

'M 'Attention `is called to the fact thatwthe lvided with a 'rear arm `16"offairly siibstan-v Partswhen 111 released 'POStOn'ale 50i-Te" lated that the distance'fromthewaxis 'about tancefrom the said axisto the outer points of the ends 17 and 18of the shoe. In other d wordsthe outer surface kof the' shoe is eclng. l

lwhichfthe friction or clutch shoelrevolves, Lto

the outer surface.ofthe` shoe 1' disposed ad?V "jacent the arm 16',` is .greater-than" the dis` face 19 of the housing 10. The ends 17 practicethe frictionorclutch shoe is" first `machined true `or concentric with its axis. Then it isfmachinedto makethe outer.

surface thereoffeccentric to\yits` axis,.the

greater `portion of the 4*cut being made at the endsv of `the shoe. `Thereafter the arms` are `drilledand-fractured. The result is ashoe` i that is under no strain when in ac ontractedV position, fand which on expansion provides positive full peripheral contact up'nfthe, -housing 10. v f

1,554,953 jL i bore tliereiii, -a lshaft revolubly i through" the vbore an providedwith an angular head,y a vgear carried by' the said shaft" and" en "gaging'fthe-v iirst mentioned What I claimk is: l v gear, .lflrtwashe'rfprovided with an angular 1. In a Vdevice of tliefclass described the b01,- SllfC1 bOFB belng Complementary to the combination of a clutch housing,` a 'clutch shoe fory external engagement. uponyjan inf` ternal face provided on the housing, ex-

pansible varms carried by the shoe,1 torfpenf gegmasad face, Qnthelloiislns, Qnep the expansible arms being prov ded-with-a bore,y

a screw extendingreciprocallyintofthebore,

gear threaded lon Vthe screw-,1 aisecond gear engaging Vthe `'first gear, f and.`p `rovided j with meanswhereby the gears may berevolubly actuated, a lever carried by the seconden.-

- pansible vend ofthe shoe,-1and engaged Vby the screw, and means for actuating the ylever for yeX andinffandecontraetinfr the ends o i cmnbinationy of; ai yc luteh housing, a clutch shoe for external engag ement nponl 'an .in-

tern'al; face provided'V on the I-liousing, ex-

pansible arms carried bythe 'slioe,:for ,en gaging said face on thehhousing, oneg ofl the veiqaan'sible arms being provided.; with bore,

' a screw extending reciprocallyintofthe bore, a gear threadedfollfthe screw, a second; gear bore kand extending therefrom, a gearzprovided with a threaded borefthrough, which ,the screw maybe moved by'rotation ofthe gear, the arm provided with saidy bore, being ,also provided with an extensionliaving seal-f 'rhead" offy the shaft and adapted vto receive the head of vthe sh aft,`-a"serew 'carried bythe yextensionadapted to engage the washer kand to loclrftlie washer, .a levercarried bythe second arm of-` theshoe, and eng`aging`.tlie

ing a pair of arms, a gear onone farm, a

screw movable relativeftothe gear, a Alever associated with vthe other arm .engaging the` screw for. expanding and contracting the arms; and' a' Second gear engaging` the rst or'k effecting' relati'vemovement of the screw andthe first gear.

f 5.y da device vof ythfefclas described :the l combina ion with an expansion shoecom,-

prisiii'garms, of a reciprocatingmember, a j

.reif'OfimeshineeeerS n 'eine erm; .for ed- ]usting the reciprocati lied f byV the ether arm engaging the reciprocatingfmember for reciprocating said member@ 6. `In a device of the 'class 'described the Vcombination with an expansion shoe comn prising armsfof a reciprocating member, a

pair of meshing gears 'on one arm- ;t'or ad'- Justing theJ reciprocating member on said one arm, means Vcarried' ,by the other arm ciprocating said. member, and "means for locking the lgears against relative-move- In testimony Whe1e0'f, ,have ,hereunto Ysubfs'cribed",myname 4th day'of April,

g member 0in 'Sid oney arm, and n ieansy car-r engaging the reciprocating member for re- 

